JP3145442U - Optical termination box - Google Patents

Abstract

An optical termination box is provided that avoids an increase in vertical and horizontal dimensions due to the incorporation of an electric device and suppresses an increase in installation space.
A housing space is defined as an optical termination box including an electrical device housing portion for housing a built-in electrical device and an optical fiber housing portion 50 for housing an extra length portion of the optical fiber. The plate 40 is divided into upper and lower two stages, and the electric device housing portion and the optical fiber housing portion 50 are arranged in a stacked state. The vertical and horizontal dimensions of the optical termination box can be kept small compared to the case where the optical termination box is arranged, and therefore, the installation space can be made compact.
[Selection] Figure 1

Description

  The present invention provides an optical fiber housing portion for housing each end portion of a main line side optical fiber and a branch line side optical fiber, and an electric device housing portion for housing an electrical device such as a power distribution breaker. Regarding termination box, it relates to measures to reduce installation space.

  For example, as described in Patent Document 1, in an optical termination box (splice box) in which each extra length portion of a trunk side optical fiber and a branch side optical fiber is accommodated together with a connecting portion between the two, An optical fiber accommodating portion for accommodating the extra length portion in a wound state is provided.

In addition, when the trunk side optical fiber is covered with a distribution cord with a single sheath to form a composite cable, and the distribution cord is connected to the branch side distribution cord, There is also known an apparatus in which an electric device accommodating portion for incorporating an electric device such as a circuit breaker interposed between the two power distribution cords coexists.
JP 2003-149455 A

  However, in the conventional case, the vertical and horizontal dimensions of the optical termination box are increased by the space of the electrical equipment accommodating portion, and as a result, the installation space for the optical termination box is increased.

  The present invention has been made in view of such a point, and its main purpose is to accommodate an electric device accommodating portion for accommodating a built-in electric device such as a circuit breaker for wiring and an extra length portion of an optical fiber. In the optical termination box provided with the optical fiber accommodating portion for the purpose, an increase in vertical and horizontal dimensions due to the incorporation of the electric equipment is avoided, and an increase in installation space can be suppressed.

  In order to achieve the above object, in the present invention, the inside of the optical termination box has a two-stage structure, and the space of the optical fiber housing portion and the space of the built-in component housing portion are made different from each other.

  Specifically, the present invention is an optical device including an electrical device housing portion for incorporating an electrical device, and an optical fiber housing portion for housing each extra length portion of the main line side optical fiber and the branch line side optical fiber. A termination box is assumed.

  A base plate that is fixed to the fixed body and has the electric device housing portion; and a partition plate that is attached to the base body so as to cover the electric device housing portion and has the optical fiber housing portion; Be prepared.

  In the above configuration, as an example of the built-in electric device, a circuit breaker (breaker) can be cited. On the other hand, the partition plate includes a closed position that covers the electric device housing portion, and the electric device housing portion. It is assumed that it is pivotally supported by the base body so as to be able to be opened and closed between two positions of the open position where it is exposed.

  In addition, when the base is provided with a main line side holding portion capable of holding a portion near the end of the main line side optical fiber and a branch side holding portion capable of holding a portion near the end of the branch side optical fiber. In the partition plate, a notch for optical fiber communication can be provided in the vicinity of the pivotal support to the base.

  Furthermore, the optical fiber housing portion is provided so as to house the extra length portion in a wound state, and the electrical device housing portion houses an electrical device having an operation portion that is manually operated. In this case, the partition plate has a penetrating portion that penetrates the partition plate in the thickness direction at a portion corresponding to the inner peripheral region of the extra length portion in the wound state in the optical fiber housing portion. On the other hand, the electrical device housing portion is exposed to the external space through the penetration portion of the partition plate when the operation portion of the electrical equipment in the electrical device housing portion is positioned at the closed position of the partition plate. It can be arranged so that.

  In the present invention, the housing space is defined as a partition plate as an optical termination box having an electrical device housing portion for housing a built-in electrical device and an optical fiber housing portion for housing an extra length portion of the optical fiber. Since the electric device accommodating portion and the optical fiber accommodating portion are arranged in a stacked state, the electric device accommodating portion and the optical fiber accommodating portion are arranged in the same stage as in the prior art. The vertical and horizontal dimensions of the optical termination box can be reduced compared to the case where the optical termination box is made, and therefore, the installation space can be made compact.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show the overall configuration of the optical termination box according to the present embodiment. In this optical termination box, the trunk side optical fiber cord A1 and the trunk side distribution cord A2 are covered with one sheath. And the branch line side power distribution cord B and the branch line side optical fiber cord C. In the following description, the top, bottom, left, and right in FIG.

  The optical termination box includes a base body 10 having a substantially concave cross section that is fixed to a flat mounting surface such as a wall surface of a fixed body. The base body 10 has a substantially rectangular shape so as to overlap the surface to be mounted, and a bottom plate portion 11 disposed so as to overlap the surface to be mounted in a state where the longitudinal direction is the vertical direction, and both lengths of the bottom plate portion 11 A pair of side plate portions 12 and 12 are provided on the side portion so as to protrude in a direction substantially orthogonal to the bottom plate portion 11. Out of the four corners of the bottom plate part 11, in the vicinity of the upper right corner and the lower left corner, through holes for attachments (not shown) for attaching the base 10 to the attachment surface 13 is provided. Further, the portions of the side plate portions 12 corresponding to the remaining upper left corner portion and lower right corner portion are approximately double the amount of protrusion from the bottom plate portion 11 than the other portions of the side plate portion 12. And the front-end | tip part is bend | folded at a substantially right angle toward the side plate part side which opposes, and the attachment for attaching the cover (not shown) covered to this optical termination box to this optical termination box A hole 14 is provided. Further, a receiving portion 15 bent at a substantially right angle toward the left plate portion 12 side is formed at a substantially central portion in the vertical direction of the right plate portion 12, and a fixing hole 16 is formed in the receiving portion 15. Is provided.

  On the lower side portion of the bottom plate portion 11 of the base 10, a hose band type main line side clamp 20 that clamps the vicinity of the end portion of the composite cable A, and each end portion of the branch line side power distribution cord B and the branch side optical fiber cord C A hinge opening / closing type branch line side clamp 21 that clamps a nearby portion by locking the opening / closing piece at the closed position is provided in a state of being arranged in the left-right direction. Further, a tension member fixing nut 22 for fixing the tension member A3 of the composite cable A clamped to the main line side clamp 20 is screwed to a portion near the upper right corner of the bottom plate portion 11. . Further, a ground wire fastening nut 23 for fastening the ground wire A4 of the composite cable A is screwed to the center of the upper side portion of the bottom plate portion 11 in the left-right direction.

  An electric device accommodating portion 30 for incorporating an electric device is set at substantially the center of the bottom plate portion 11, and the electric device accommodating portion 30 has a substantially rectangular parallelepiped shape in the present embodiment. A circuit breaker D for wiring is installed. In this circuit breaker D for wiring, the longitudinal direction of the circuit breaker D for wiring is in the vertical direction, and the connection terminal (not shown) located on the lower end side is clamped by the branch line side clamp 21. It arrange | positions so that it may be located on the extension line of the power distribution code | cord | chord B. FIG. In addition, d in a figure is an operation handle of the circuit breaker D for wiring.

  A partition plate 40 having a substantially rectangular shape and having smaller vertical and horizontal dimensions than the bottom plate portion 11 of the base 10 is attached to the base 10 via a hinge 41. Specifically, the hinge 41 is arranged such that the shaft portion 42 extends in the vertical direction along the side opposite to the bottom plate portion 11 in the left side plate portion 12 of the base body 10, and one piece 43 is the left side plate portion. 12 is fixed to a substantially central portion in the vertical direction while the other piece 44 is fixed to a substantially central portion in the vertical direction on the left side portion of the partition plate 40, whereby the partition plate 40 is shown in FIGS. 1 and 2. As shown in FIG. 3, the closed position that is substantially parallel to the bottom plate portion 11 and covers the bottom plate portion 11, and the bottom plate portion 11 is exposed substantially orthogonal to the bottom plate portion 11 as shown in FIGS. 3 and 4. The shaft portion 42 is rotated around the opening position. Further, on the right side portion side of the partition plate 40, a protrusion 45 is formed so as to overlap the receiving portion 15 of the base 10 when the partition plate 40 is positioned at the closed position. 45 is provided with a closure 46 for fixing the protruding portion 45 on the receiving portion 15 so that the partition plate 40 is held in the closed position when the protruding portion 45 overlaps the receiving portion 15. Yes.

  The region corresponding to the peripheral edge on the partition plate 40 is an optical fiber accommodating portion 50 that accommodates the extra length portions of the optical fiber cords A1 and C or the optical fibers a1 and c in a wound state. Specifically, hinged open / close type optical fiber clamps 51 and 51 are provided on the upper and lower end portions of the partition plate 40 to clip the upper and lower end portions of the extra length portion by locking the open / close pieces at the closed positions. It has been. Further, on the left and right side portions of the partition plate 40, there are provided optical fiber locking portions 52, 52 that are formed in a substantially U-shaped cross section and lock the left and right side portions of the extra length portion. . The excess length portion is accommodated in a wound state by the optical fiber clamps 51 and 51 and the optical fiber locking portions 52 and 52. If a torque hinge that can fix the opening / closing piece to an arbitrary opening / closing position is used for the branch-side clamp 21 or the optical fiber clamp 51, the situation where the opening / closing piece closes inadvertently during work can be avoided. Therefore, smoothing of the clamping work can be achieved.

  The optical fiber housing portion 50 is set so that the inner peripheral region of the extra length portion housed in the optical fiber housing portion 50 corresponds to the circuit breaker D on the electrical device housing portion 30. Yes. And the part corresponding to the inner peripheral side area | region of the said surplus length part in the partition plate 40 is substantially rectangular-shaped penetration which exposes the operation handle d of the circuit breaker D for wiring on the electric equipment accommodating part 30 to front side space. A portion 53 is provided.

  Between the right optical fiber locking portion 52 and the lid 46, a connection portion accommodating portion 54 for accommodating a connection portion between the optical fibers a1 and c by fusion connection or connector connection is provided. Yes. In this connection portion accommodating portion 54, a holder 55 for holding the connection portions of the optical fibers a1 and c is installed. The holder 55 includes a plurality of one end side slits 56, 56,... That sandwich one optical fiber a1, and a plurality of other end side slits 57 that sandwich the other optical fiber c on the other end side of the connecting portion. .. Are arranged so as to hold each connection portion in a state extending in the vertical direction.

  Further, the upper portion and the lower portion of the left optical fiber locking portion 52 in the partition plate 40 are respectively located between the two spaces partitioned by the partition plate 40 of the optical fiber cords A1 and C to the optical fibers a1 and c. It is set as the notch parts 58 and 58 for wiring which accept | permit a communication line. In the example shown in the figure, the optical fiber cord A1 on the trunk line side passes through the lower notch portion 58, and the optical fiber cord C on the branch line passes through the upper notch portion 58.

  Therefore, in this embodiment, the optical fiber accommodating part 50 provided so that each extra length part of the trunk side optical fiber cord A1 of the composite cable A and the branch side optical fiber cord C may be accommodated, and the trunk side of the composite cable A Can be fixed to a fixed body as an optical termination box having an electrical equipment accommodating portion 30 provided so as to accommodate a circuit breaker D for wiring interposed between the distribution cord A2 and the branch-side distribution cord B On the other hand, the electric device housing portion 30 is provided on the base 10, and the partition plate 40 is attached to the base 10 so as to cover the electric device housing portion 30, and the optical fiber housing portion 50 is provided on the partition plate 40. Since the electric device accommodating portion 30 and the optical fiber accommodating portion 50 are separately arranged in the two-stage space partitioned by the electric space, the electric device accommodating portion is arranged in one space as in the conventional case. As compared with the case where and optical fiber accommodating part coexist, it is possible to reduce the vertical and horizontal dimensions of the body 10, thus, it can contribute to downsizing of the optical termination box.

  At that time, the partition plate 40 is divided into a closed position (FIGS. 1 and 2) that covers the electric device housing part 30 and an open position (FIGS. 3 and 4) that exposes the electric device housing part 30. Since the base 10 is pivotally supported so that it can be opened and closed between positions, it is possible to prevent the workability related to the circuit breaker D for wiring on the electrical equipment housing 30 from being lowered due to the presence of the partition plate 40.

  Further, since the optical fiber cord A1 of the composite cable A and the notch portion 58 for passing the branch side optical fiber cord C are provided in the vicinity of the pivotal support portion of the partition plate 40 to the base body 10, the composite cable is provided on the base body 10 side. Although the vicinity of each end of A and the branch line side optical fiber cord C is clamped, the extra length portions of the optical fiber cords A1 and C are accommodated in the optical fiber accommodating portion 50 without being obstructed by the partition plate 40. In addition, the situation in which the optical fiber cords A1 and C hinder the opening and closing movement of the partition plate 40 can be avoided.

  Further, the optical fiber housing part 50 and the electrical equipment housing part 30 are set so that the operation handle d of the circuit breaker D is positioned in a region other than the housing region of the extra length portion by the optical fiber housing unit 50. Thus, since the penetrating portion 53 is provided in the area of the partition plate 40 corresponding to the operation handle d, and the operation handle d is exposed to the front space of the partition plate 40 through the through portion 53, the partition plate 40 is closed. The circuit breaker D can be operated in the state.

  In the above embodiment, the trunk side optical fiber is drawn into the optical termination box in the state of the composite cable and the branch side optical fiber is drawn in the state of the branch side optical fiber cable. The mode of the state is not particularly limited.

  Moreover, in said embodiment, although the circuit breaker D for wiring is used as a built-in electric equipment, in connection with it, the trunk line side distribution cord and the branch line side distribution cord are also drawn in in an optical termination box, but other than that An electric device (for example, a terminal block) can be built in, and the presence or absence or type of a cord drawn into the optical termination box can be appropriately set according to the built-in electric device.

FIG. 1 is a front view showing an overall configuration together with an example of wiring in a state where a partition plate is positioned at a closed position in an optical termination box according to an embodiment of the present invention. FIG. 2 is a bottom view showing the overall configuration of the optical termination box with the partition plate positioned at the closed position. FIG. 3 is a view corresponding to FIG. 1 showing the entire configuration of the optical termination box with the partition plate positioned at the open position together with an example of wiring. FIG. 4 is a view corresponding to FIG. 3 showing the overall configuration of the optical termination box with the partition plate positioned at the open position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Base | substrate 30 Electrical equipment accommodating part 40 Partition plate 41 Hinge 50 Optical fiber accommodating part 53 Penetration part 58 Notch part A for wiring A composite cable (trunk line side optical fiber, trunk line side power distribution cord)
A1 Main line side optical fiber cord (Main line side optical fiber)
a1 Optical fiber (main line side optical fiber)
A2 Trunk-side distribution cord B Branch-side distribution cord C Branch-side optical fiber cord (branch-side optical fiber)
c Optical fiber (branch line side optical fiber)
D Circuit breaker for wiring (Electric equipment)
d Operation handle (operation unit)

Claims (5)

An electrical equipment housing for containing electrical equipment;
An optical termination box comprising an optical fiber housing portion for housing each extra length portion of the trunk side optical fiber and the branch side optical fiber,
A base body provided so as to be fixable to a fixed body and having the electric device housing portion;
An optical termination box, comprising: a partition plate attached to the base so as to cover the electrical equipment housing portion and having the optical fiber housing portion. The optical termination box according to claim 1,
The electrical equipment is an optical termination box that is a circuit breaker interposed between the main line side distribution cord and the branch line side distribution cord. The optical termination box according to claim 1,
The partition plate is an optical termination box that is pivotally supported by the base body so that it can be opened and closed between two positions: a closed position that covers the electrical device housing portion and an open position that exposes the electrical device housing portion. In the optical termination box according to claim 3,
The substrate is provided with a main line side holding portion capable of holding a portion near the end of the main line side optical fiber and a branch side holding portion capable of holding a portion near the end of the branch line side optical fiber,
An optical termination box in which a notch for optical fiber communication is provided in the vicinity of the pivotal support portion of the partition plate to the base. The optical termination box according to claim 4,
The optical fiber accommodating portion is provided so as to accommodate the extra length portion in a wound state,
The electrical device storage unit is configured to store an electrical device having an operation unit that is manually operated,
The partition plate has a penetrating portion that penetrates the partition plate in the thickness direction in a portion corresponding to the inner peripheral side region of the extra length portion of the wound state in the optical fiber housing portion,
The electrical device housing portion is disposed so that the operation portion of the electrical device in the electrical device housing portion is exposed to the external space through the through portion of the partition plate when the partition plate is positioned at the closed position. Optical termination box.

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